60 CHAPTER 5: S TANDARD FEATURESIf the third party is internal and does not answer, the attempt toconference that party is cancelled. You cannot establish a conference callwith an NBX user’s voice mailbox.4 Repeat steps 2 and 3 to conference in a fourth party.■ You can activate speaker phone operation during the conference callby pressing the Speaker button.■ You can turn off the microphone or the mouthpiece on the handsetby pressing the Mute or button. The other parties cannot hearyou, but you can hear them.■ For details about the Speaker and Mute features, see “TelephoneButtons and Controls” in Chapter 2 for the 3102 Business Telephoneor “Telephone Buttons and Controls” in Chapter 3 for the 1102,2102, and 2102-IR Business Telephones.Disconnecting theLast PersonThat You CalledUse the Conference Drop feature to disconnect the last person that youadd to a conference call. This feature is helpful if, when you add a party,your call is answered by someone else.■ Only the person who added the last caller to the conference call candrop that caller.■ Your administrator can configure any Access button on a 3ComTelephone or the Attendant Console to be a Conference Dropbutton.On a telephone that does not have a button programmed for ConferenceDrop:1 Press Feature + 431.2 The system returns you to the others who are in the conference call.
